8 books
The Complete Plotto
Mastering Plotto
Adrift in the Unknown or Queer Adventures in a Queer Realm
King of Chaos & Cast Away at the Pole
Cast Away At The Pole
Adrift in the Unknown
The Fiction Factory; Being the Experience of a Writer Who, for Twenty-Two Years, Has Kept a Story-Mill Grinding Successfully
A Round Trip to the Year 2,000